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NVIDIA NCP-AII Practice Test 47

Question 460

During an NVIDIA AI factory acceptance test, engineers discover: GPU workers assigned to a general-purpose category receive CPU-only image settings and missing driver packages. Which TWO complementary elements are needed: the correct technical action and the strongest independent diagnostic evidence? Select TWO answers.

  1. Inspect kernel version, signed modules, driver logs, package provenance and canary compatibility tests.
  2. Treat managed BCM category configuration as merely a label that cannot overwrite manually modified worker settings.
  3. Define explicit BCM node categories and managed overrides for shared hardware and service configuration.
  4. Align supported interface or bond configuration, RDMA stack and fabric QoS with the cluster topology.
  5. Inspect category membership, inherited images, node overrides, resulting configuration and change impact.

Explanation

Correct Answers

C:

This is an appropriate correction for BCM node categories and role inheritance: Define explicit BCM node categories and managed overrides for shared hardware and service configuration. Observed scenario: GPU workers assigned to a general-purpose category receive CPU-only image settings and missing driver packages. The governing mechanism is: A BCM category groups settings applied to member nodes; untracked manual changes may conflict with managed desired state.

E:

This is the direct operational evidence to investigate: Inspect category membership, inherited images, node overrides, resulting configuration and change impact. Observed scenario: GPU workers assigned to a general-purpose category receive CPU-only image settings and missing driver packages. The governing mechanism is: A BCM category groups settings applied to member nodes; untracked manual changes may conflict with managed desired state.

Incorrect Answers

A:

This alternative is relevant to Linux operating system and kernel module support but does not directly resolve the current BCM node categories and role inheritance issue: Inspect kernel version, signed modules, driver logs, package provenance and canary compatibility tests. Observed scenario: GPU workers assigned to a general-purpose category receive CPU-only image settings and missing driver packages.

B:

This tempting but unsafe shortcut is not a sufficient remediation for BCM node categories and role inheritance: Treat managed BCM category configuration as merely a label that cannot overwrite manually modified worker settings. GPU workers assigned to a general-purpose category receive CPU-only image settings and missing driver packages. A BCM category groups settings applied to member nodes; untracked manual changes may conflict with managed desired state.

D:

This alternative is relevant to Compute fabric interface bonding and RDMA prerequisites but does not directly resolve the current BCM node categories and role inheritance issue: Align supported interface or bond configuration, RDMA stack and fabric QoS with the cluster topology. Observed scenario: GPU workers assigned to a general-purpose category receive CPU-only image settings and missing driver packages.

Question 461

A production GPU cluster review identifies this condition: A node's manual interface edit disappears after the BCM category configuration is reapplied. Which operational response is MOST appropriate to address the root issue? Select ONE best answer.

  1. Synchronize Slurm GRES inventory with hardware and MIG state and validate per-job device isolation.
  2. Define explicit BCM node categories and managed overrides for shared hardware and service configuration.
  3. Treat managed BCM category configuration as merely a label that cannot overwrite manually modified worker settings.
  4. Install the supported BCM head-node services and preserve configuration data before provisioning and accepting workers.

Explanation

Correct Answer

B:

This is an appropriate correction for BCM node categories and role inheritance: Define explicit BCM node categories and managed overrides for shared hardware and service configuration. Observed scenario: A node's manual interface edit disappears after the BCM category configuration is reapplied.

Incorrect Answers

A:

That option concerns Slurm GPU GRES enumeration and device mapping. A BCM category groups settings applied to member nodes; untracked manual changes may conflict with managed desired state.

C:

This tempting but unsafe shortcut is not a sufficient remediation for BCM node categories and role inheritance: Treat managed BCM category configuration as merely a label that cannot overwrite manually modified worker settings. A node's manual interface edit disappears after the BCM category configuration is reapplied.

D:

That option concerns Base Command Manager head-node installation. A BCM category groups settings applied to member nodes; untracked manual changes may conflict with managed desired state.

Question 462

In a professional AI infrastructure deployment, a technician observes: A node's manual interface edit disappears after the BCM category configuration is reapplied. Which underlying infrastructure principle BEST explains the issue? Select ONE best answer.

  1. Accelerator and fabric software are kernel-dependent; a generic successful Linux boot does not establish full GPU readiness.
  2. A BCM category groups settings applied to member nodes; untracked manual changes may conflict with managed desired state.
  3. Treat managed BCM category configuration as merely a label that cannot overwrite manually modified worker settings.
  4. A working Slurm daemon is not enough; partitions determine which nodes and resources can serve jobs.

Explanation

Correct Answer

B:

This is the governing infrastructure principle: A BCM category groups settings applied to member nodes; untracked manual changes may conflict with managed desired state. Observed scenario: A node's manual interface edit disappears after the BCM category configuration is reapplied.

Incorrect Answers

A:

That option concerns Linux operating system and kernel module support. The acceptance condition is: Correct GPU workers receive the intended profile without unrelated node categories being modified.

C:

This tempting but unsafe shortcut is not a sufficient remediation for BCM node categories and role inheritance: Treat managed BCM category configuration as merely a label that cannot overwrite manually modified worker settings. A node's manual interface edit disappears after the BCM category configuration is reapplied. A BCM category groups settings applied to member nodes; untracked manual changes may conflict with managed desired state.

D:

That option concerns Slurm controller partition setup. The acceptance condition is: Correct GPU workers receive the intended profile without unrelated node categories being modified.

Question 463

The cluster operations team needs to evaluate this situation: A node's manual interface edit disappears after the BCM category configuration is reapplied. Which diagnostic evidence should be obtained FIRST to substantiate the likely fault or configuration gap? Select ONE best answer.

  1. Inspect kernel version, signed modules, driver logs, package provenance and canary compatibility tests.
  2. Treat managed BCM category configuration as merely a label that cannot overwrite manually modified worker settings.
  3. Inspect category membership, inherited images, node overrides, resulting configuration and change impact.
  4. Inspect DHCP leases, PXE requests, image revisions, BCM node mappings and host boot traces.

Explanation

Correct Answer

C:

This is the direct operational evidence to investigate: Inspect category membership, inherited images, node overrides, resulting configuration and change impact. Observed scenario: A node's manual interface edit disappears after the BCM category configuration is reapplied.

Incorrect Answers

A:

This alternative is relevant to Linux operating system and kernel module support but does not directly resolve the current BCM node categories and role inheritance issue: Inspect kernel version, signed modules, driver logs, package provenance and canary compatibility tests. Observed scenario: A node's manual interface edit disappears after the BCM category configuration is reapplied.

B:

This tempting but unsafe shortcut is not a sufficient remediation for BCM node categories and role inheritance: Treat managed BCM category configuration as merely a label that cannot overwrite manually modified worker settings. Observed scenario: A node's manual interface edit disappears after the BCM category configuration is reapplied. The governing mechanism is: A BCM category groups settings applied to member nodes; untracked manual changes may conflict with managed desired state. The proportionate action is: Define explicit BCM node categories and managed overrides for shared hardware and service configuration.

D:

This alternative is relevant to BCM image provisioning and PXE worker boot but does not directly resolve the current BCM node categories and role inheritance issue: Inspect DHCP leases, PXE requests, image revisions, BCM node mappings and host boot traces. Observed scenario: A node's manual interface edit disappears after the BCM category configuration is reapplied.

Question 464

At a multi-node AI infrastructure handoff, the team records: A node's manual interface edit disappears after the BCM category configuration is reapplied. After corrective work, which observable result BEST confirms that the requirement is met? Select ONE best answer.

  1. Treat managed BCM category configuration as merely a label that cannot overwrite manually modified worker settings.
  2. The requested test job enters the correct partition and runs on an eligible healthy GPU node.
  3. Each workload reaches the intended high-speed path and RDMA transfer passes with correct device selection.
  4. Correct GPU workers receive the intended profile without unrelated node categories being modified.

Explanation

Correct Answer

D:

This is an observable verified result, not merely a claimed configuration change: Correct GPU workers receive the intended profile without unrelated node categories being modified. Observed scenario: A node's manual interface edit disappears after the BCM category configuration is reapplied.

Incorrect Answers

A:

This tempting but unsafe shortcut is not a sufficient remediation for BCM node categories and role inheritance: Treat managed BCM category configuration as merely a label that cannot overwrite manually modified worker settings. Observed scenario: A node's manual interface edit disappears after the BCM category configuration is reapplied. The governing mechanism is: A BCM category groups settings applied to member nodes; untracked manual changes may conflict with managed desired state. The proportionate action is: Define explicit BCM node categories and managed overrides for shared hardware and service configuration. A direct check is: Inspect category membership, inherited images, node overrides, resulting configuration and change impact. The acceptance condition is: Correct GPU workers receive the intended profile without unrelated node categories being modified.

B:

This alternative is relevant to Slurm controller partition setup but does not directly resolve the current BCM node categories and role inheritance issue: The requested test job enters the correct partition and runs on an eligible healthy GPU node. Observed scenario: A node's manual interface edit disappears after the BCM category configuration is reapplied.

C:

This alternative is relevant to Compute fabric interface bonding and RDMA prerequisites but does not directly resolve the current BCM node categories and role inheritance issue: Each workload reaches the intended high-speed path and RDMA transfer passes with correct device selection. Observed scenario: A node's manual interface edit disappears after the BCM category configuration is reapplied.

Question 465

During an NVIDIA AI factory acceptance test, engineers discover: An administrator changes an entire node category to fix one host and unexpectedly alters fifty healthy nodes. Which operational response is MOST appropriate to address the root issue? Select ONE best answer.

  1. Treat managed BCM category configuration as merely a label that cannot overwrite manually modified worker settings.
  2. Validate DHCP/PXE services, provisioned image and node identity mapping, then test clean node reboots.
  3. Define explicit BCM node categories and managed overrides for shared hardware and service configuration.
  4. Enforce individual authenticated host access, network restrictions and tested key rotation with accountable emergency recovery.

Explanation

Correct Answer

C:

This is an appropriate correction for BCM node categories and role inheritance: Define explicit BCM node categories and managed overrides for shared hardware and service configuration. Observed scenario: An administrator changes an entire node category to fix one host and unexpectedly alters fifty healthy nodes.

Incorrect Answers

A:

This tempting but unsafe shortcut is not a sufficient remediation for BCM node categories and role inheritance: Treat managed BCM category configuration as merely a label that cannot overwrite manually modified worker settings. An administrator changes an entire node category to fix one host and unexpectedly alters fifty healthy nodes.

B:

This alternative is relevant to BCM image provisioning and PXE worker boot but does not directly resolve the current BCM node categories and role inheritance issue: Validate DHCP/PXE services, provisioned image and node identity mapping, then test clean node reboots. Observed scenario: An administrator changes an entire node category to fix one host and unexpectedly alters fifty healthy nodes.

D:

This alternative is relevant to Host SSH certificates keys and OS access segregation but does not directly resolve the current BCM node categories and role inheritance issue: Enforce individual authenticated host access, network restrictions and tested key rotation with accountable emergency recovery. Observed scenario: An administrator changes an entire node category to fix one host and unexpectedly alters fifty healthy nodes.

Question 466

A production GPU cluster review identifies this condition: An administrator changes an entire node category to fix one host and unexpectedly alters fifty healthy nodes. Which underlying infrastructure principle BEST explains the issue? Select ONE best answer.

  1. A BCM category groups settings applied to member nodes; untracked manual changes may conflict with managed desired state.
  2. Managed worker bring-up depends on the boot image and correct network identity, not just physical server power.
  3. Cluster managers coordinate images, nodes, services and configuration; worker OS boot cannot replace control-plane readiness.
  4. Treat managed BCM category configuration as merely a label that cannot overwrite manually modified worker settings.

Explanation

Correct Answer

A:

This is the governing infrastructure principle: A BCM category groups settings applied to member nodes; untracked manual changes may conflict with managed desired state. Observed scenario: An administrator changes an entire node category to fix one host and unexpectedly alters fifty healthy nodes.

Incorrect Answers

B:

That option concerns BCM image provisioning and PXE worker boot. The acceptance condition is: Correct GPU workers receive the intended profile without unrelated node categories being modified.

C:

This alternative is relevant to Base Command Manager head-node installation but does not directly resolve the current BCM node categories and role inheritance issue: Cluster managers coordinate images, nodes, services and configuration; worker OS boot cannot replace control-plane readiness. Observed scenario: An administrator changes an entire node category to fix one host and unexpectedly alters fifty healthy nodes.

D:

This tempting but unsafe shortcut is not a sufficient remediation for BCM node categories and role inheritance: Treat managed BCM category configuration as merely a label that cannot overwrite manually modified worker settings. An administrator changes an entire node category to fix one host and unexpectedly alters fifty healthy nodes. A BCM category groups settings applied to member nodes; untracked manual changes may conflict with managed desired state.

Question 467

In a professional AI infrastructure deployment, a technician observes: An administrator changes an entire node category to fix one host and unexpectedly alters fifty healthy nodes. Which diagnostic evidence should be obtained FIRST to substantiate the likely fault or configuration gap? Select ONE best answer.

  1. Check HA roles, sync status, virtual management endpoint, database replication and isolation tests.
  2. Review authorized key and account policy, SSH server settings, firewall reachability and authentication logs.
  3. Treat managed BCM category configuration as merely a label that cannot overwrite manually modified worker settings.
  4. Inspect category membership, inherited images, node overrides, resulting configuration and change impact.

Explanation

Correct Answer

D:

This is the direct operational evidence to investigate: Inspect category membership, inherited images, node overrides, resulting configuration and change impact. Observed scenario: An administrator changes an entire node category to fix one host and unexpectedly alters fifty healthy nodes.

Incorrect Answers

A:

That option concerns BCM high availability and management failover. A BCM category groups settings applied to member nodes; untracked manual changes may conflict with managed desired state.

B:

This alternative is relevant to Host SSH certificates keys and OS access segregation but does not directly resolve the current BCM node categories and role inheritance issue: Review authorized key and account policy, SSH server settings, firewall reachability and authentication logs. Observed scenario: An administrator changes an entire node category to fix one host and unexpectedly alters fifty healthy nodes.

C:

This tempting but unsafe shortcut is not a sufficient remediation for BCM node categories and role inheritance: Treat managed BCM category configuration as merely a label that cannot overwrite manually modified worker settings. Observed scenario: An administrator changes an entire node category to fix one host and unexpectedly alters fifty healthy nodes. The governing mechanism is: A BCM category groups settings applied to member nodes; untracked manual changes may conflict with managed desired state. The proportionate action is: Define explicit BCM node categories and managed overrides for shared hardware and service configuration.

Question 468

The cluster operations team needs to evaluate this situation: An administrator changes an entire node category to fix one host and unexpectedly alters fifty healthy nodes. After corrective work, which observable result BEST confirms that the requirement is met? Select ONE best answer.

  1. Jobs follow approved priority and maintenance tests do not unexpectedly preempt protected production work.
  2. The intended worker reliably reboots into the approved OS and image with the right management identity.
  3. Treat managed BCM category configuration as merely a label that cannot overwrite manually modified worker settings.
  4. Correct GPU workers receive the intended profile without unrelated node categories being modified.

Explanation

Correct Answer

D:

This is an observable verified result, not merely a claimed configuration change: Correct GPU workers receive the intended profile without unrelated node categories being modified. Observed scenario: An administrator changes an entire node category to fix one host and unexpectedly alters fifty healthy nodes.

Incorrect Answers

A:

This alternative is relevant to Slurm scheduling time limits fairness and preemption but does not directly resolve the current BCM node categories and role inheritance issue: Jobs follow approved priority and maintenance tests do not unexpectedly preempt protected production work. Observed scenario: An administrator changes an entire node category to fix one host and unexpectedly alters fifty healthy nodes.

B:

This alternative is relevant to BCM image provisioning and PXE worker boot but does not directly resolve the current BCM node categories and role inheritance issue: The intended worker reliably reboots into the approved OS and image with the right management identity. Observed scenario: An administrator changes an entire node category to fix one host and unexpectedly alters fifty healthy nodes.

C:

This tempting but unsafe shortcut is not a sufficient remediation for BCM node categories and role inheritance: Treat managed BCM category configuration as merely a label that cannot overwrite manually modified worker settings. Observed scenario: An administrator changes an entire node category to fix one host and unexpectedly alters fifty healthy nodes. The governing mechanism is: A BCM category groups settings applied to member nodes; untracked manual changes may conflict with managed desired state. The proportionate action is: Define explicit BCM node categories and managed overrides for shared hardware and service configuration. A direct check is: Inspect category membership, inherited images, node overrides, resulting configuration and change impact. The acceptance condition is: Correct GPU workers receive the intended profile without unrelated node categories being modified.

Question 469

At a multi-node AI infrastructure handoff, the team records: A newly racked worker network-boots from the wrong image and lacks GPU runtime dependencies. Which operational response is MOST appropriate to address the root issue? Select ONE best answer.

  1. Use approved Enroot images and versioned runtime dependencies with restricted mounts and a reproducible launch test.
  2. Enforce individual authenticated host access, network restrictions and tested key rotation with accountable emergency recovery.
  3. Assume that a host appearing in a rack inventory means it has booted the intended management-controlled system image.
  4. Validate DHCP/PXE services, provisioned image and node identity mapping, then test clean node reboots.

Explanation

Correct Answer

D:

This is an appropriate correction for BCM image provisioning and PXE worker boot: Validate DHCP/PXE services, provisioned image and node identity mapping, then test clean node reboots. Observed scenario: A newly racked worker network-boots from the wrong image and lacks GPU runtime dependencies.

Incorrect Answers

A:

This alternative is relevant to Enroot container image and execution lifecycle but does not directly resolve the current BCM image provisioning and PXE worker boot issue: Use approved Enroot images and versioned runtime dependencies with restricted mounts and a reproducible launch test. Observed scenario: A newly racked worker network-boots from the wrong image and lacks GPU runtime dependencies.

B:

That option concerns Host SSH certificates keys and OS access segregation. Managed worker bring-up depends on the boot image and correct network identity, not just physical server power.

C:

This tempting but unsafe shortcut is not a sufficient remediation for BCM image provisioning and PXE worker boot: Assume that a host appearing in a rack inventory means it has booted the intended management-controlled system image.

Question 470

During an NVIDIA AI factory acceptance test, engineers discover: A newly racked worker network-boots from the wrong image and lacks GPU runtime dependencies. Which TWO complementary elements are needed: the correct technical action and the strongest independent diagnostic evidence? Select TWO answers.

  1. Inspect DHCP leases, PXE requests, image revisions, BCM node mappings and host boot traces.
  2. Assume that a host appearing in a rack inventory means it has booted the intended management-controlled system image.
  3. Validate DHCP/PXE services, provisioned image and node identity mapping, then test clean node reboots.
  4. Inspect interfaces, RDMA devices, routing, bond membership, link counters and representative transfer tests.
  5. Install the supported BCM head-node services and preserve configuration data before provisioning and accepting workers.

Explanation

Correct Answers

A:

This is the direct operational evidence to investigate: Inspect DHCP leases, PXE requests, image revisions, BCM node mappings and host boot traces. Observed scenario: A newly racked worker network-boots from the wrong image and lacks GPU runtime dependencies.

C:

This is an appropriate correction for BCM image provisioning and PXE worker boot: Validate DHCP/PXE services, provisioned image and node identity mapping, then test clean node reboots. Observed scenario: A newly racked worker network-boots from the wrong image and lacks GPU runtime dependencies. The governing mechanism is: Managed worker bring-up depends on the boot image and correct network identity, not just physical server power.

Incorrect Answers

B:

This tempting but unsafe shortcut is not a sufficient remediation for BCM image provisioning and PXE worker boot: Assume that a host appearing in a rack inventory means it has booted the intended management-controlled system image. Managed worker bring-up depends on the boot image and correct network identity, not just physical server power.

D:

This alternative is relevant to Compute fabric interface bonding and RDMA prerequisites but does not directly resolve the current BCM image provisioning and PXE worker boot issue: Inspect interfaces, RDMA devices, routing, bond membership, link counters and representative transfer tests. Observed scenario: A newly racked worker network-boots from the wrong image and lacks GPU runtime dependencies.

E:

This alternative is relevant to Base Command Manager head-node installation but does not directly resolve the current BCM image provisioning and PXE worker boot issue: Install the supported BCM head-node services and preserve configuration data before provisioning and accepting workers. Observed scenario: A newly racked worker network-boots from the wrong image and lacks GPU runtime dependencies.

NCP-AI Infrastructure (NCP-AII) Practice Tests